31104518 has 4 divisors (see below), whose sum is σ = 46656780. Its totient is φ = 15552258.

The previous prime is 31104511. The next prime is 31104529. The reversal of 31104518 is 81540113.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 31104493 and 31104502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31104511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7776128 + ... + 7776131.

It is an arithmetic number, because the mean of its divisors is an integer number (11664195).

Almost surely, 2^31104518 is an apocalyptic number.

31104518 is a deficient number, since it is larger than the sum of its proper divisors (15552262).

31104518 is a wasteful number, since it uses less digits than its factorization.

31104518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15552261.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 31104518 is about 5577.1424582845. The cubic root of 31104518 is about 314.4907131082.

The spelling of 31104518 in words is "thirty-one million, one hundred four thousand, five hundred eighteen".